scholarly journals Performance, Emission, Energy, and Exergy Analysis of a C.I. Engine Using Mahua Biodiesel Blends with Diesel

2014 ◽  
Vol 2014 ◽  
pp. 1-13 ◽  
Author(s):  
Nabnit Panigrahi ◽  
Mahendra Kumar Mohanty ◽  
Sruti Ranjan Mishra ◽  
Ramesh Chandra Mohanty
Keyword(s):  
Energy Input ◽  
Exergy Analysis ◽  
Energy Analysis ◽  
Emission Energy ◽  
Exhaust Gases ◽  
Mahua Oil ◽  
Brake Power ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Mahua Biodiesel

This paper presents an experimental investigation on a four-stroke single cylinder diesel engine fuelled with the blends of Mahua oil methyl ester (MOME) and diesel. The performance emission, energy, and exergy analysis has been carried out in B20 (mixture of 80% diesel by volume with 20% MOME). From energy analysis, it was observed that the fuel energy input as well as energy carried away by exhaust gases was 6.25% and 11.86% more in case of diesel than that of B20. The unaccounted losses were 10.21% more in case of diesel than B20. The energy efficiency was 28%, while the total losses were 72% for diesel. In case of B20, the efficiency was 65.74 % higher than that of diesel. The exergy analysis shows that the input availability of diesel fuel is 1.46% more than that of B20. For availability in brake power as well as exhaust gases of diesel were 5.66 and 32% more than that of B20. Destructed availability of B20 was 0.97% more than diesel. Thus, as per as performance, emission, energy, and exergy part were concerned; B20 is found to be very close with that of diesel.

scholarly journals Application of energy and exergy analysis to increase efficiency of a hot water gas fired boiler

2014 ◽  
Vol 20 (4) ◽  
pp. 511-521 ◽  
Author(s):  
Milena Todorovic ◽  
Dragoljub Zivkovic ◽  
Marko Mancic ◽  
Gradimir Ilic
Keyword(s):  
Exergy Analysis ◽  
Energy Analysis ◽  
Hot Water ◽  
Engineering Practice ◽  
Economic Optimization ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis ◽  
Reliable Solution ◽  
Control Volumes ◽  
Functional Components

In engineering practice exergy can be used for technical and economic optimization of energy conversion processes. The problem of increasing energy consumption suggests that heating plants, i.e. hot water boilers, as energy suppliers for household heating should be subjected to exergy and energy analysis. Heating plants are typically designed to meet energy demands, without the distinguished difference between quality and quantity of the produced heat. In this paper, the energy and exergy analysis of a gas fired hot water boiler is conducted. Energy analysis gives only quantitative results, while exergy analysis provides an insight into the actually available useful energy with respect to the system environment. In this paper, a hot water boiler was decomposed into control volumes with respect to its functional components. Energy and exergy of the created physical model of the hot water boiler is performed and destruction of exergy and energy loss in each of the components is calculated. The paper describes the current state of energy and exergy efficiency of the hot water boiler. The obtained results are analyzed and used to investigate possibilities for improvement of availability and reliability of the boiler. A comparison between the actual and the proposed more reliable solution is made.

Experimental energy and exergy analysis of a novel water-LiBr absorption system

2017 ◽  
Vol 23 (1) ◽  
pp. 31 ◽  
Author(s):  
G. Gutiérrez Urueta ◽  
A. Huicochea ◽  
W. Rivera ◽  
P. Rodríguez Aumente ◽  
Francisco Oviedo Tolentino
Keyword(s):  
Exergy Analysis ◽  
Absorption System ◽  
Experimental Energy ◽  
Energy And Exergy ◽  
Energy And Exergy Analysis
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